PVD Ce-coating to mitigate intergranular oxidation of additively manufactured Ni-base alloy IN625
Artikel i vetenskaplig tidskrift, 2025
Additively manufactured Ni-base alloy IN625 suffered from intergranular oxidation (IGO) during air exposure at 900 °C. IGO is triggered by oxide buckling over the alloy’s grain boundaries (GBs), followed by oxidation of the open intergranular voids. Application of a 10 nm thick PVD coating of Ce induced a slower inward growth of the Cr2O3 scale, better oxide adherence and as a result strongly suppressed IGO. The main beneficial effect provided by Ce is improved oxide adherence preventing oxide buckling and oxidation of intergranular voids.
Författare
Anton Chyrkin
Materialkemi
Andrea Fazi
Massachusetts Institute of Technology (MIT)
Chalmers, Fysik, Mikrostrukturfysik
Mohammad Sattari
Chalmers, Fysik, Mikrostrukturfysik
Mattias Thuvander
Chalmers, Fysik, Mikrostrukturfysik
Marta Krystyna Stiller
Chalmers, Fysik, Mikrostrukturfysik
Mats Halvarsson
Chalmers, Fysik, Mikrostrukturfysik
E. Wessel
Forschungszentrum Jülich
D. Naumenko
Forschungszentrum Jülich
Jan Froitzheim
Chalmers, Kemi och kemiteknik, Energi och material
npj Materials Degradation
2397-2106 (eISSN)
Vol. 9 1 117Ämneskategorier (SSIF 2025)
Metallurgi och metalliska material
DOI
10.1038/s41529-025-00677-5